HP EliteBook 8470w Maintenance And Service Manual page 106

NOTE:
the defective system board and installed on the replacement system board:
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Remove the system board:
1.
2.
98 Chapter 4 Removal and replacement procedures
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When replacing the system board, be sure that the following components are removed from
SIM (see SIM on page 58, if applicable)
Memory module (see Memory module on page
WWAN module (see WWAN module on page
WLAN module (see WLAN module on page
Heat sink (see Heat sink on page
Processor (see Processor on page
Release the wireless antenna cables (1) from the routing clips (2) attached to the system board.
Disconnect the following cables from the system board:
(3) Display lid switch board cable
(4) Display panel cable
(5) Webcam/microphone module cable
(6) Fingerprint reader cable
(7) RTC battery cable
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